Power-transmitting mechanism.



' No. 873,338. PATENTED DEC. 17, 190?.

F. BUOHEB-ER.

PGWER TRANSMITTING MECHANISM APPLICATION FILED MAR. 19. 1907.

2 SHBETS-SHEET 1.

Inventor:

No. 878,838v

F, BUGHERBR. POWER- TEANSMITTING MECHANISM.

APPLICATION FILED 1:13.319 1907.

Attest'j 09W Inventor: 7 .i

\ ekbim W. @M

PATENTED DEC. 17, 1%7.

2 SHEBTS-SHEBT 2.

' FREDERICK BUCHERER, or BAYONNE, NEW JERSEY.

m, evasae.

Qpecification of Letters Patent.

rownn-rnansm'rrmo MECHANISM.

Patented Dec. 17, 1907.

l Application filed Mai-oh 1'9. 190']. Serial No. 363.253.

To all-whom 'it may concern:

Be it known that I, FREDERICK BUOHERER, a citizen of the United States, residing at Bayonne, in the county of Hudson and State 5 of- New Jersey, have invented certain new and useful Improvements in Power-Transmittin'g Mechanism, of which the following is a'specification. 1 My invention relates to pulleys designed 10 for the transmission of power without the use of a'belt, and its novelty consists in the construction and adaptation of the parts as will be more fully hereinafter pointed out. -It"has lon' been desired to manufacture pulleys whic could be used in the transmission of ower without the usual belt and which cou d yet be used with the driven pulley without-changing the form or size of the latter.

The object ofmy invention is to supply this need, and I do this by making the r. riviscriipltlion.

. en the driving plluey and'the driven ing pulley of such construction that when the'driving and driven pulleys are brought together power is transmitted at once and automatically by reasonof the fact that lateral annular flanges, with .Which-the driving pulley is provided, arethereby brought to bear upon the driven pulley and transmit motion thereto.

In the drawings Figure 1 is a central section of a pulleyembodying my invention, taken on a diametric plane as indicated by the line 1-1of Fig. 2; Fig. 2 is .a-side elevation thereofi'Fig. 3 is a central section of the pulley, showing the position of the parts when the pulleys'are in engagement; Fig. 4 is a diam'etrical section of a modified form of the conical drum; Fig. 5 is a perspective of one of. the pulley sectors and .its con.- nections; Fig. 6 is an illustration of the application of my improved pulley to a case where it is desired to transmit power through it only temporarily, and Fig. 7 is an illustration of the ap lication of the same to a case .where it is desired to transmit power through it ermanently.

' n Figs. 1 to 5 of the drawings, 10 is a driving shaft. Secured to this in any suitable manner is the driving ulley. 11 is an inner sleeve or shell encirc ing the shaft and preferabl made in two parts. Secured to the she l 11 (or directly to the shaft, if desired) are two carriers 12, each 'rii'ade of light flexigable and elastic metal, as thin sheet steel,

driving pulley and an elevation of the driven 1 preferably cut into a star like form, with radial arms 13 and provided with apertures adapted to receive screws 14. Secured in turn to each of those carriers by the screws 14 is a conical drum 15 with its base or larger end turned inwardly and provided at its outer; edge with a lateral annular flange 16. The drums are two in number and are of such a size that when assembled. there exlsts between them an appreciable space 17.

The drums may be made in sectors 18 as shown clearly in Fig. 5 and the inner edge of the flange 1.6 is cushioned with a strip 19 of leather or other suitablematerial, to increase its holding capacity. It is-also placed at an angle to afford a larger gripping surface when the pulley is tilted as shown in .Fig. 3.

' 20 is the shaft of the driven pulley 21 of usual form and which needs no special deconical drum in which 12 is the carrier and 22 is a shell of steel, or other suitable material. 23, 23, are rings preferably made of leather encircling the shell 22 and held in position by a transverse bolt 24.

In Fig. 6 my pulley is shown applied to the actuation of a sewing machine. In this View 30 indicates a motor, 31 is a sewing machine, 32 is the table of the latter, 33 is a pulley secured to its main shaft, and 34 a belt leading to a grooved pulley 35. This latter is mounted on a shaft 36 supported insuitable bearings 37 and normally held out of contact with the driving pulley 38 of my improved construction by means of sprin s 39. The pulley 38 is secured to the she t 40 of the motor 30 in a' manner heretofore described. To the treadle 41 of the machine is attached a frame 42 secured to or in engagement with the bearings 37 and so arran ed that when the treadle is depressed the pu leys 35 and 38 are brought together and power is thereafter chine 31 so long as the treadle remains depressed.

In Fig. 7 my pulley is shown applied to a motor in such a way as to constitute a permanent power connection. In this view 50 is a motor slidablyarranged on a permanent base 51 and capable of adjustment by means of the set screws 52 in a manner well under.

53 is one of my lmproved pulleys secured to the shaft 54 of the motor" stood in the art.

55 indicates-a driven pulley adapted to .en-v

gage with .the pulley 53. By moving the motor 50 toward the pulley 55 until engagement takes place betweenthe latter and the :pulley 53 power is transmitted as before.

What I claim as new is 1. A driving pulley providedwith a lateral annular flange and a yielding surface whereby pressure of such surface against a second pul ey will cause the'lateral flange to project inwardly to engage the secondpulley.

2. A driving pulley having a periphery of @greater diameter near its center than at its edges, a lateral annular flange and a flexible support whereby the surface of the pulley may move inwardly to bring the flange toward thepulley center.

' 3. ilhe combination with a driving shaft of two conical drums yieldingly mounted thereon, each drum being provided with a.

lateral annular flange. I

4. The combination with a driving shaft of two conical drums yieldingly and independently mounted thereon, in close proximity to each other each drum being provided with a lateral annular flange.

5. Adriving pulley com rising two conical drums, each independent y and yieldingly mounted on a driving shaft and each pro.

of the said carriers, so that the bases of the drums are adjacent but do not touch.

8. The combination with a driving shaft of a driving pulley ,com rising two conical drums, each made of a p urality of segments respectively mounted on elastic supports which in turn are secured to the driving shaft each segment of the drums having a lateral 'fla nge, forming as a Whole, when assembled, a com lete annulus.

9. he combination with a driving shaft of a driving pulley comprising two conical drums, each made of a plurality of segments WlllCll in turn are secured to the driving shaft, each segment of the drum having a lateral flange, forming as a whole, when assembled, a complete annulus, the two conical drums being arranged Withtheir bases adjacent but separated by a space sufficient topermit the annular flanges to move toward each other when the bases are pressed inwardly.

10. A driving pulle comprising flexible supports, lateral annuliir flanges carried by said supports and normally held away from the transverse center of the pulle and means for moving said flanges towar said transverse center adapted to be actuatedby pressure upon the periphery of the pulley.

, 11. A driving pulley comprising flexible sup orts, lateral annu ar flanges carried by saic supports and normally held away from for moving said flanges towar said transverse center adapted to be actuated by pres-' sure upon the periphery of the pulley, said means comprising independent drums of greater diameter near the transverse center than near the ends. v I

12. A pulley comprising ariannular flange and means adapted to be actuated b pressure upon the periphery of the pu ley to move said flange toward the transverse center of the pulley.

In testimony whereof I aflix my signature in presence of two witnesses.

FREDERICK BUOHERER.

lvitnessesz WILLIAM .R. BAIRD, ALAN MoDoNNnLL.

respectively mounted on elastic carriers.

the transverse center of the pulle r, and means 

